Hi, someone may be able to help with my problem with the screen image on my mac plus? it boots fine, I get the floppy icon, and flashing ?, but the screen has disapeared, from halfway to the bottom, nothing , there is a bright line across the middle, and the image is sqeezed up tight to this line? how can I pull this line down to the bottom of the screen? or does someone know why this is happening? help!!.......... Harry.